This is as simple as it gets - a dimmer and power supply rolled into one. Nothing else to purchase. Mounts in a standard switch box, accepts 120VAC and converts it to low voltage DC.
120 VAC input 100-1% smooth dimming, no minimum load. No derating required. Power failure memory provides for Switchex to return to setting prior to power interruption. Each Switchex includes all three interior face plates: glossy white, glossy light almond, and glossy dark brown. Trim plates sold separately. cULus listed (Canada and the US); FCC approved, RoHS certified, CE certified. 5 year warranty.